低产油井间开模式定量优化及应用

基于降低生产成本和节约能源的目的,对低产油井实行间开生产已经为人们普遍接受.合理确立油井间开工作制度显得尤为重要.利用油井静液面恢复快慢程度与其产能的密切关系,引入油层折算压力,初步确立该油井的工作制度.在此基础上,考虑液面恢复过程中液柱自重抑制了地层的供液能力,建立了井筒液柱高度恢复随时间变化的模型,拟合出实际液面恢复高度随时间变化方程,从而优化了工作制度.应用于现场一口生产井取得了较好效果.

Quantitative optimization of the intermittent production pattern of low producing oil wells and its applications

For the purpose of reducing the production cost of crude oil and saving energy resource, the importance of implementing intermittent production to low producing oil wells is recognized. Therefore, it is very important to reasonably determine the working system of this kind of oil wells. By introducing reduced reservoir pressure, the preliminary working system of the oil well can be determined based on the close relationship between the restoring speed of the static liquid surface of the well and its productivity. On the basis of this, the relationship between the height of the liquid column in wellbore and time is established, in which the weight of the liquid column reducing the liquid supply capability of formation is considered. And therefore, the working system of the oil well is optimized. The method is applied to a low producing oil well,and a good result is gained.